SFP 1.25G BIDI 20KM 1310TX/1490RX SC 139

The SFP 1.25G BIDI 20KM 1310TX/1550RX SC is a specific type of small-form-factor Pluggable transceiver module designed for use in data communication and telecommunications equipment.

Here's what each part of the description means:

SFP: Small Form-factor Pluggable. This indicates the form factor and interface type of the transceiver module. SFP modules are hot-pluggable and compact, widely used in networking equipment.

1.25G: This denotes the data transfer rate supported by the transceiver, which is 1.25 Gigabits per second.

BIDI: Short for bidirectional. This indicates that the transceiver is capable of transmitting and receiving data over a single fiber optic strand by using different wavelengths for upstream and downstream traffic.

20 KM: This specifies the maximum distance over which the transceiver can reliably transmit data, which in this case is 20 kilometers.

1310TX/1550RX: These numbers represent the wavelengths used for transmitting (TX) and receiving (RX) data. Specifically, data is transmitted at 1310 nanometers (TX) and received at 1550 nanometers (RX).

SC: Refers to the type of optical connector used with this transceiver. SC connectors are commonly used in fiber optic networks and are known for their push-pull coupling mechanism and easy installation.

Applications:

Switch to Switch Interface

Gigabit Ethernet

Switched Backplane Applications

Router/Server Interface

Other Optical Links

Features:

Up to 1.25 GB/s data links

1310nm FP laser transmitter and PIN photodetector

Up to 20km on 9/125µm SMF

Hot-pluggable SFP footprint

BIDI LC/UPC-type pluggable optical interface

Low power dissipation

Metal enclosure, for lower EMI

RoHS-compliant and lead-free

Support a Diagnostic Monitoring interface

Single +3.3V power supply

Compliant with SFF-8472

Case operating temperature

Commercial: 0 ~ +70 oC

Extended: -10 ~ +80oC

Industrial: -40 ~ +85 oC

Part Number Ordering Information:

absolute maximum ratings
It has to be noted that the operation is in excess of any individual absolute maximum ratings
might cause permanent damage to this module.

Recommended Operating Conditions and Power Supply Requirements:

General Description:

Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP laser, and the PIN photo-detector. The module data link up to 20km in 9/125um single mode fiber.The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the
system also can disable the module via I2C. Tx Fault is provided to indicate the degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal from the receiver or the link status with the partner. The system can also get the LOS (or link) or disable/fault information via I2C register access.

In summary, the SFP 1.25G BIDI 20KM 1310TX/1550RX SC is a hot-pluggable transceiver module capable of bidirectional communication at a data rate of 1.25 Gigabits per second over a single fiber optic strand, with a maximum transmission distance of 20 kilometers, and utilizing SC optical connectors.

Here are some related SFP links below:

SFP 1.25G BIDI 1550Tx/1310Tx 40KM LC:

SFP 1.25G 1550Tx/1310Rx 60KM LC:

SFP 1.25G BIDI 1550Tx/1490Rx 80KM LC:

SFP 1.25G Bidi Tx1310nm/Rx1550nm 20KM LC:

SFP 1.25G BIdI 1310Tx/1550Rx 10KM, LC:

SFP 1.25G 1310nm 20km LC Duplex: